#!/usr/bin/python3

# 演示了狗的年龄计算判断：

age = int(input("please input your dog age:"))
print("")
if age < 0:
    print("hahha")
elif age == 1:
    print("14 years old!")
elif age == 2:
    print("22 years old!")
elif age > 2:
    human = 22 + (age - 2)*5
    print("对应人类的年龄:", human)

# 退出提示
input("点击enter键退出。")
